ORPHA:527276
Encephalopathy due to mitochondrial and peroxisomal fission defect
Query health: suspect — Only one of 2 strategies returned hits (phrase).
Publications
42
49.6th percentile
Trials
0
Interventional, condition-specific
Researchers
267
Distinct authors in sample
Gene link
DNM1L, MFF
Definitive
Readiness
2/6
Stages with a signal
Clinical definition (Orphanet)
A rare disease characterized by a variable comprising delayed psychomotor development or neurodevelopmental regression, , , microcephaly, optic atrophy, pyramidal signs, and peripheral , among others. Age of onset and disease severity are also variable with some cases taking a fatal course in early infancy. Serum lactate levels may be elevated. Reported brain imaging findings include abnormal signals in the basal ganglia, cerebral and/or cerebellar atrophy, and white matter abnormalities.
How rare: <1 / 1 000 000 — fewer than one in a million. In a city the size of Kolkata, that might mean on the order of fifteen people.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0054865
- UMLS:C5681458
Additional Mondo synonyms (2)
encephalopathy due to defective mitochondrial and peroxisomal fission · encephalopathy due to mitochondrial and peroxisomal fission defect
Research stages
Trial readiness signals
Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”
2/6 stages with a signal
No matched interventional trial; the gene is known and literature exists — preclinical or natural-history work may still be the practical next step.
- Gene identifiedPresent
Definitive — DNM1L, MFF
- LiteraturePresent
42 matched papers (40 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- Interventional trialNot found
No matched interventional trial under our ClinicalTrials.gov rules
Biology
Genes and phenotypes
Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.
Do we know what causes it?
Yes — we know a specific gene responsible (DNM1L, MFF).
GenCC classification: Definitive.
Phenotypes (Monarch / HPO)
Not enriched in this build — Monarch phenotype joins were not run for this record.
Animal models (Monarch / Alliance)
Not enriched in this build.
Literature
Is anyone studying this?
42
42 papers have ever been published on this condition (under this name). For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=5449) is 41.
42 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).
40 in the last 10 years · high confidence · 49.6th percentile (publications denominator)
Phrase hits: 42 · MeSH hits: 0
Who's working on it?
267
Distinct author names in 42 sampled papers — named people below.
Who's working on it?
No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.
- 01Bellen HJ3 papers · 2024
Department of Molecular and Human Genetics, Howard Hughes Medical Institute and Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA, Neurological Research Institute, Texas Children Hospital, Houston, TX 77030, USA.
Papers in Europe PMC - 02Gama V3 papers · 2025
Vanderbilt University, Cell and Developmental Biology, Nashville, TN 37232, USA.
Papers in Europe PMC - 03Li D3 papers · 2025
Department of Pediatric Neurology, Tianjin Children's Hospital/Tianjin University Children's Hospital, Tianjin, China.
Papers in Europe PMC - 04Mears JA3 papers · 2023
Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
Papers in Europe PMC - 05Robak LA3 papers · 2019
Department of Molecular and Human Genetics, Neurological Research Institute, Texas Children Hospital, Houston, TX 77030, USA.
Papers in Europe PMC - 06Robertson GL3 papers · 2025
Vanderbilt University, Cell and Developmental Biology, Nashville, TN 37232, USA.
Papers in Europe PMC - 07
- 08Wangler MF3 papers · 2019
Department of Molecular and Human Genetics, Neurological Research Institute, Texas Children Hospital, Houston, TX 77030, USA michael.wangler@bcm.edu.
Papers in Europe PMC - 09Zhang Z3 papers · 2025
Department of Pediatric Neurology, Tianjin Children's Hospital/Tianjin University Children's Hospital, Tianjin, China.
Papers in Europe PMC - 10Assia Batzir N2 papers · 2019
Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA.
Papers in Europe PMC
Clinical research
Is a treatment being tested?
0
interventional trials for this specific condition
No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present).
Data as of 27 July 2026
No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.
high confidence · 36.5th percentile (trials denominator)
Recruiting interventional trials
From the matched ClinicalTrials.gov set
No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.
See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Where to find support
We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:
India — NPRD
Last verified 2026-07-26This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.
Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.
How we counted this
Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.
"Encephalopathy due to mitochondrial and peroxisomal fission defect" OR "encephalopathy due to defective mitochondrial and peroxisomal fission"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Encephalopathy due to mitochondrial and peroxisomal fission defect" OR "encephalopathy due to defective mitochondrial and peroxisomal fission" OR "DNM1L" OR "MFF" OR "mitochondrial oxidative phosphorylation disorder" OR "disorder of defective peroxisomal and mitochondrial fission" OR "inborn mitochondrial metabolism disorder"
Recall-expansion terms: DNM1L, MFF, mitochondrial oxidative phosphorylation disorder, disorder of defective peroxisomal and mitochondrial fission, inborn mitochondrial metabolism disorder
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Query health: suspect — strategies attempted: phrase, recall-expansion; with hits: phrase
Run this search on ClinicalTrials.gov
Confidence reasoning
- Preferred label is multi-word and distinctive
- No synonyms dropped by stoplist
- No label/synonym collisions with other diseases in this corpus
Ingested 2026-07-27T18:04:17.268Z